tunneln.隧道；地道；洞穴v.挖地道；挖隧道tunnel cable隧道电缆tunnel level隧道标高tunnel light隧道照明tunnel vault筒形拱顶tunnel guide隧道针tunnel erase隧道擦除tunnel drill隧道用凿岩机tunnel shaft隧道竖井,中间轴tunneldigger隧道发掘机,挖掘隧道的人tunnel noise隧道噪声